2026-05-07T08:25:57Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/100512025-07-28T07:28:59Zcom_10259_3844com_10259_5086com_10259_2604col_10259_3845

Activating the SERS features of screen-printed electrodes with thiocyanate for sensitive and robust EC-SERS analysis Moldovan, Rebeca Pérez Estébanez, Martín Heras Vidaurre, Aránzazu Bodoki, Ede Colina Santamaría, Álvaro EC-SERS Spectroelectrochemistry Substrate activation Thiocyanate Sensor Propranolol This study presents a novel electrochemical (EC) methodology for activating the SERS features of disposable silver screen-printed electrodes (AgSPEs) using a pseudohalide as a precipitating agent to guide the assembly of a nano-filamentous silver network responsible for a strong SERS enhancement. To the best of our knowledge, the use of thiocyanate for SPEs activation for quantitative purposes has not been reported before. In order to better study this complex system, time-resolved (TR) operando spectroelectrochemistry (SEC) measurements were performed by SERS and UV-Vis and correlated with SEM imaging of the electrode surface at different steps. Moreover, to significantly increase the reproducibility of the assays, a rapid EC protocol was proposed for the first time to obtain a reliable Ag/AgSCN reference electrode (RE) and a comprehensive optimization process was conducted to determine the critical parameters. Additionally, propranolol, as an emerging pharmaceutical pollutant has been selected as a model molecule to demonstrate the applicability of the method for rapid (3 min) quantitative analysis in the nM range from real river and tap water samples. 2025-01-29T07:34:37Z 2025-01-29T07:34:37Z 2025-01-29T07:34:37Z 2024 info:eu-repo/semantics/article 0925-4005 http://hdl.handle.net/10259/10051 10.1016/j.snb.2024.135468 1873-3077 eng Sensors and Actuators B: Chemical. 2024, V. 407, 135468 https://doi.org/10.1016/j.snb.2024.135468 info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica, Técnica y de Innovación 2017-2020/PID2020-113154RB-C21/ES/APLICACION DE NUEVOS MATERIALES Y DISPOSITIVOS PARA EC-SERS Y EC-SOERS/ info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica, Técnica y de Innovación 2021-2023/RED2022-134120-T/ES/RED DE SENSORES Y BIOSENSORES ELECTROQUIMICOS: RETOS ANTE LA TRANSFORMACION DIGITAL E INDUSTRIAL/ http://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess Atribución 4.0 Internacional Elsevier